user
Instruction: Complete the flow chart to explain the four stages of the sleep cycle.

assistant
START

IF Person is falling asleep 
THEN 
Stage 1 - Light Sleep
ELSEIF Person enters deeper sleep 
THEN 
Stage 2 - Deep Sleep 
ELSEIF Person is entering into dreamlike state
THEN 
Stage 3 - Rapid Eye Movement (REM)
ELSE 
Stage 4 - Very Deep Sleep 
 
END